Harmonics of power system seriously affected the quality of electric power. Shunt Active Power Filter (SAPF) [1] which overcomes the shortcomings of passive filter (PF) has become main technology to suppress harmonic....
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ISBN:
(纸本)9783038352594
Harmonics of power system seriously affected the quality of electric power. Shunt Active Power Filter (SAPF) [1] which overcomes the shortcomings of passive filter (PF) has become main technology to suppress harmonic. In this paper, structure, mathematic model, detection method and control of SAPF are mainly analyzed and reviewed. With development of key technology of APF, it will have a better application prospect.
With the development of economic and technology, global resources crisis and environment issues have become increasingly prominent, all of these lead new challenges to the electric power grid. In the development of fu...
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ISBN:
(纸本)9783038352594
With the development of economic and technology, global resources crisis and environment issues have become increasingly prominent, all of these lead new challenges to the electric power grid. In the development of future power grid, Smart Grid (SG) represents a new direction of future development. Smart Distribution Grid (SDG) is an important breakthrough in SG as the last part of the power system to the user. Firstly, this paper gives the definition of SDG. Then it introduces the key technologies according to the requirement of SDG. Finally, it is concluded that SDG is the inevitable result of the development.
Micro-grid has become one of the most important adjuncts to solve the power system in some developed countries. This article aims to introduce the every country's definition of Micro-grid and its significance, dis...
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Currently, the study of the vascular interventional surgery (VIS) robot becomes more and more popular, which is to improve the safety of the surgery. In this paper, a novel master-slave robotic catheter system has bee...
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ISBN:
(纸本)9781479970995
Currently, the study of the vascular interventional surgery (VIS) robot becomes more and more popular, which is to improve the safety of the surgery. In this paper, a novel master-slave robotic catheter system has been proposed for the VIS. The system uses MR (magneto rheological) fluid to implement force feedback. The force feedback to the operator on the master side is very important to improve the safety of the surgery. The damper is a piston structure with MR fluid. The coil winds around the piston. When the piston is moving in the piston cylinder, the resistance to the piston will appear as a certain amount of current applied to the coil. We can realize the force feedback by this way. The surgeon can feel the force through the operating catheter connected with the damper, which seems that the surgeon operates the catheter beside the patient. The force feedback evaluation experiments of the damper were done. The error between the detected force and the damping force is in the allowable range. The maximum of error is lower than 0.1N. According to a research presenting that the force larger than 0.12N will injure the vessel, it indicates that the error can meet our design requirement. The experimental results indicated that the damper was effective for realizing the force feedback of the master-slave system. It can provide force feedback to the surgeon in real time.
Nowadays, all countries around the world have made big efforts on the development of the PV system. As a recently emergent industry, the prospect of the PV system is very great. As a effective mode of using the new en...
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In the field of renewable energy, wind energy has one of the best prospects in all industries. It is a kind of clean, practical, economic and environmentally friendly alternative energy. It also has the advantages of ...
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Aim:The research was designed to analyse the influences of stress distribution of proximal femur between different loading methods-Hip- femur model and single femur model,and to lay a foundation for the stress distrib...
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Aim:The research was designed to analyse the influences of stress distribution of proximal femur between different loading methods-Hip- femur model and single femur model,and to lay a foundation for the stress distribution law for agglutination of fracture reparation after femural neck fracture and intertrochanteric fracture,and after femoral head ***:First, the healthy adult volunteer's pelvis and femur were scanned by CT,then a three-dimensional reconstruction was made by MIMICS and GEOMAGIC,to build a finite element model of the hip and ipsilateral femur ***, the finite element method was used to study the stress distribution law of proximal femur by different loading *** was loaded along the lines of force direction for a single femoral model, another was loaded to Hip- femur model. Nonlinear contact of the femur head and acetabulum is considered in Hip – femur ***: Two different loading methods significantly affected stress distribution at proximal ***: If we research on stress distribution at proximal femur, pelvis affects *** in a single femoral loading method, the head of femur was directlyloaded *** femoral head contacting with pelvis was not *** is not truthful if we specify the force point factitiously.
APF has its outstanding features comparing with PPF, it is a new type harmonic suppression and reactive power compensation device. This paper makes an introduction about two key technologies about APF, and it makes a ...
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A distribution system consists of all sorts of power distribution equipment, communication system and control equipment. It works according to certain rules to meet the demand of users by the high quality of electric ...
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Harmonics of power system seriously affected the quality of electric power. Active Power Filter (APF) [1] which overcomes the shortcomings of passive filter (PF) has become main technology to suppress harmonic. In thi...
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